Relay



R. E; HALL RELAY l Filed my 51, 1922' vMay 17, 1927.

Patented May 17,1927.

UNITED STATES `PATENT OFFICE.

RAY E. HALIMOF ROCK ISLAND, ILLINOIS, ASSIGNOB T0 HALL RESEARCH CORPORA- TION, F CHICAGO, ILLINOIS, A CORPORATION 0F DELAWARE.

RELAY.

Application mea may ai, 1922. serial ia. 564,981.

The object of this invention is to provide a relay that will require a signal .of long duration to close contact, but which will open quickly upon a break in the signal.

A vfurther object of the invention 1s to provide a jet relay in which the movable medium will respond quickly to the action.

of the normal jet and will react slowly when the jet assumes an abnormal phase due to the action of sound waves set up by the incoming signal.

A further ob'ect of the invention is to produce a call or wireless telephones that will notl be affected by telegra h signals or otherI electrical disturbances o short duration.

Further objects of the invention will b e-4 come apparent as the description is read in connection with theaccompanying drawing illustrating a selected embodiment of the invention and in which Fig. 1 is a sectional viewof a jet rel'ay showing one application of the invention;

Fig. 2 is a section on line 2-2 of Fig. 1; and

Fig. 3 is a, plan view of the diaphragm chamber. with the diaphragm removed.

- The relay is shown supported by a plate which may be secured to any suitable casing, or the like. Mounted on the'plate is a frame 11 in which are arranged the nozzle 12, funnel 13 and the telephone 14. The nozzle 12 communicates through the pipe 15 with a suitable source of fluid under proper pressure. The funnel 13 communicates with the diaphragm chamber 16 of the telephone 14. .Preferably the nozzle and funnel are adjustably mounted so as to permit them to be accurately arranged in the particular relation required.

The jet 17 issuing from` the nozzle 12j passes through. a passage 18 into a diaphragm chamber 19 formed in the facejof a disk 20 and supported on the plate -10. The diaphra 21 fo a wall of the chamber is laid over the 20 and secured against the plate 10 by a ring 22 which may be made fast by. screws or the like. The passage 18 is formed in a tube with the disk 20 and at its lend communi- `chamber an valve 25 preventingthe ready relief of pres-V tends to keep the valve seated. In order to 1 provide free communication the. sides .of

the valve chamber aresharply inclined as indicated at 28.

The diaphragm carries a disk 29 fixed to a contact 30 carried by the end of a resilient arm 31 fastened to the ring 22 as indicated at 32. Co-operating with the contact 30 is a contact 33 Acarried by an arm 34 which may be adjusted by a thumb screw 35. The arm 34 is secured to the ring`.22 by a screw 36 similar to that illustrated at 32 and these screws may serve as binding Aposts to connect the contacts 30 and 33 in lthe circuit of a magnet 37 which includes a battery or the like 38. The magnet 37 when energized will move an armature 39 to close a circuit Awith the contact 40 to ring a bell or perform chamber through a by-pass 41. When a signal operates the diaphragm in the telephone 14 it will set up sound waves that will pass the funnel 13 and act upon the jet at the mouth of thevnozzle 12 and cause it to assume varyin phases in which a small portion only will enter passage 18. Conse' quently, the dpressure within the diaphragm thev spring 27 will close the sure in the diaphragm 'chamber and holding the diaphragm distended. By provid-- ing the by-pass 41 leading from the diaphragm chamber to the atmosphere and adjusting the area thereof as by a screw 42, the time necessary to permit the diaphragm to react and close the contact 30 with the conaol tact 33 can be adjusted to any suitable period. In applying the invention to a call for wireless telephones, a by-pass that Will require approximately 10 seconds to permit the contacts to close will prevent telegraph signals, static discharges and practically all other electrical disturbances likely to be found under present conditions from operating the relay. By varying the by-pass, however, the period necessary for the escape of the trapped fluid Within the diaphragm chamber can be regulated to suit particular conditions and the relay can be made to operate for any desired period.. Consequently, the relay can be adjusted so that it will not be affected by static discharges or telegraph signals of any intensity, wave length or pitch and will be operated onl by va signal of long duration `Which is pre etermned.

If a signal of short duration operates the telephone le, the jet 17 will be modified for only a corresponding period durin which the fluid within the diaphragm cham r will hold the contacts open. .Immediately upon the cessation of the signal, the jet will assume its normal phase, open the valve 25 and continue to apply fluid to the diaphragm chamber with usual pressure. Any number of short si nals can be received. without affecting the re ay. When along signal produces any deformation of the jet, the diaphragm 21 will vreact sulciently to close the contact and operate the leaf 39 or other detector;

I am aware that changes may be made in the form, construction and arrangement of the invention, as set forth in the selected embodiment herein, without de arting fromthe scope or sacrificing any o its material advantages, and I therefore reserve the ri ht to make all such changes as fairly all Within thev scope of the following claims.

I claimz' A l. The combination of means to produce a jet of fluid, means-to impress vibrations on said jet to make it assume varying phases, a resilient mediun adapted-to move in one direction when acted upon by the 'et and to react in the opposite direction w en the action of the jet as abated, and .fluidvent x means to adjust the reaction of said resilient medium. X

Y 2. Tfhe combination of means 'for producing a jet of fluid, means for impressing waves on said jet, a-resilient medium adapted to move in one direction under the action of the f jet and to react in the opposite direction when the action of the jetI is abated, meansv to retard the reaction of said resilient meium and means to permit the medium to react slowly.

3. The combination of means to produce a jet of iluid, means for impre vibrations on` said jet, a diaphragm adap to be acted *the 'contacts for a relatively long period.

upon by said'jet, a normally closed valve in the path of said jet, and a by-pass permitting escape of the fluid after it has acted on said diaphragm.

4. The combination of means for producing a jet of fluid, means for impressing vibrations on saidjet, a diaphragm chamber, a normally closed valve inthe path of said jet controlling egress of fluid from said chamber, a diaphragm forming a Wall .of said chamber and a by-pass connecting said chamber with the atmosphere.

5. The combination of means for producing a jet of fluid, means for impressing Waves on said jet, a diaphragm in the path of said jet, a chamber over which said diaphragm extends andinto Whichsaid jet is directed, a check valve controlling the escape of lluid from said chamber, and a by-pass communicating With said chamber.

6. The combination of a diaphragm, a chamber having one Wall thereof formed by said diaphragm, a contact movable with said diaphragm, a. relatively fixedl contact, means for directing a jet of fluid into said chamber to movesaid diaphragm in one direction, a valve controlling egress from said chamber, and a by-pass communicating with saidchamber.

7 'Ihe combination of a diaphragm, separable contacts operated'bysaid diaphragm, a fluid chamber having a Wall formed by said diaphragm,` a passage communicating with said chamber, a normally closed valve `controlling saidpassage, means for directing a jet of fluid through said passage into said chamber, means for impressing` waves on said jet, and means for .permitting-the escape of fluid from said chamber.

y 8. The combination including separable contacts, a resilient medium adapted to open and close said contacts, `means to bias said' Y medium in a direction to separate saidcontacts, means to abate the action of the last named means, and fluid vent means to retard the reaction of said medium. f

9. The combination 'including' separable contacts, a diaphragm for controlling said contacts, means for producin a fluid jet .to bias said diaphragm, means or abating the force of said jet, means for automatically checking the reaction of said diaphragm, and means to slowly relieve said dia hragm.

,10. The combination of relative y mov-\\V able contacts, a resilient medium for operating said contacts,'means to bias said me- 12 -dium inone direction to open said contacts,

means to abate the action ofthe last named means,and independent means to retard the reaction of said medium to prevent closing-V 11. T hefcombination of relatively movi able contacts, a resilient medium adapted to control said contacts, means to bias said medium to open said contacts, means to abate the action of the last named means, means to block the reaction of said resilient medium, and independent means to relieve the 5 medium slowly.

12. The combination of relativel)T movable contactsl a diaphragm for opening and closing said contacts, means for directing a jet into a chamber adjacent to said diaphragm, a check valve controlling the entrance to said chamber, means for abatlng the action of said jet, and means to slowly relieve the pressure in said chamber.

RAY E. HALL. 

